What is the best career option after a B Sc in mathematics at Kolhan University?

The best career option is to pursue your Master’s degree in Mathematics followed by MPhil or Ph.D. It can assure you a promising livelihood in Research or Teaching Field. If you are interested in Economics, you can do your master’s in that subject as well. Other choices include doing your MBA (Masters in Business Administration), CA, or CFA. 

You don’t have many options open if you want to pursue jobs after your graduation.